Automobile.



He'hmw mf No. 825.276. PATENTED JULY 3, 1906.

H. LEMP. AUTOMOBILE.

APPLICATION FILED IAN.2 4.1906.

2 SHEETSSHEET l. F/ 'q Inventor:

Atty

' No. 825,276. 4 PATENIED JULY 190s.

' H. LEMP.

AUTOMOBILE. APPLICATION FILED JAN. Z419 06.

2 8HEETSSHEET 2 H represents a foot edal mounted on the shift it, whichcarries t e lever i. VVhenth-e pedal His depressed, the for-w-ard'end ofthe lever i is raised. The lever 'i is connected by any suitableflexible connection, such as a .chain or cord j, to the-lever 7c,lglQuntedi-ipon" the shaft Z, whichrunslengthwise of the carriage.Mounted on the shaft Z are two levers an anda. The first of thesecarries a rod 0,

tr o

which is connected to the exhaust-valves of the engine 111 such a mannerthat the longitutheart.

dinal. motion ofrod-o varies the lift of the eX- haustevalves in amanner well understood in By the variation of the lift oftheexhaust-valves the mixture of the engine is regulated and the speed'andtorque of the engine varied. 'Levern. is connected to the rod '32, whichoperates the ignition device of jthe engine-1n such-amanner thatas rodhis moved longitudinally the spark will be adyanced or retarded in' thewell-known mantion shown against the'yiel 1 t The several parts aresoadjusted that when lever k, to rotate shaft h, and to liftpeda her andfurther speed control of the engine thereby secured; The rods 0' and pare; giten i suffic ent range of movement to vary'th'e engine speedovera wide range:

s is a tension-sprin attached tg'i'the rod 1) and to the frame of te'mach ne', tending to retract rod-p, soya's to rotatesh'aft Z,'tode-r'es's mails: to w everal art'S in the- 'o'slig stop T.

1 tor-that is, at a speed too low t6 permit the generator tofurnish'suflicient current tdt-h'e motors for driving the vehicle. Thevehicle canthus be brought to restatany'time simby removingall pressurefrom the pedal By pressing'down the pedal H the speed of the engineincreased until the critical speed of the generator is reached. At thisppint the generator produces a suihci'ently-' fgh voltage to furmsh aworking current to the motors and the vehicle starts from rest. Thevehicle may thus be started and stopped by mea ns of the single pedalwithout dis turbing any of the connections of the electric circuit. p

In Fig. 2 I have shown a pivoted'catch g, which adapted to engage pedalH and hold it in a 'slightly depressed position while the engine isfirst being started by hand. After the engine is once started, the pedalHis fur; ther. depressed to raise the engine speed above the criticalspeed of the genera-tor, and catch g is released and falls hack-into aninoperative position. Itdoes not come again into use during theoperation of the machine, since the vehicle is stoppedandstarted Withoutstopping the engine.

wound generator is articularly suitable,

"since a compound mac ine will operate at a lower speed without losingits field magnetization than would be possible for a shuntmachine, and,furthermore, a compoundwound machine picks up more readily when broughtup to speed with its armature-circuit closed through the motors. The useof a compound-wound machine is-not essential, however, and satisfactoryresults can be obtained with shunt-wound generators.

What I claim'as new, and desire to secure by Letters Patent of theUnited States, is

1. In a self-propelled vehicle, a prime mover, an electric eneratordriven thereby,

an electric motor riven by said generator, and means for lowering thespeed of the prime mover below thecritical speed of the generatorwithout's'to ing the prime mover.

2. In a self-propel ed vehicle, a prime mover, a compound-wound electricgenerator driven thereby, an'electric motor driven by said generator,and means for raising and lowering the speed of theprime mover above andbelow'the'critical speed of the generator without, disturbing theelectrical connections. 3. In'a self-propelled vehicle, aninternalcombustion engine, an electric generator driven thereby, an'electric motor driven by said generator, and means for advancing andretarding the spark and for regulating the mixture of the engine toraise and lower the engine'speed above and below the critical speed ofthe generator ",4; In a self-propelled vehicle, a prime mover, anelectric generator driven thereby, an electric motor for'driving thevehicle supplied'with current from said generator, and

means under the control of the operator for raising and'lowering the seed of said prime mover above and belowt e critical speed of saidgenerator," m

5; "In 'a"'self'-prope1led'.vel1icle, a prime mover, an'electrlcgenerator driven thereby, an electric motor for driving the vehiclesupplied with current from said generator, speedcontrollin means forsaid prime mover arranged no mally to maintain the speed of the primemover below the critical speed of the generator, and a lever under thecontrol of the'operator operatively connected to said speed-controllingmeans. 7

' 6. In a self-propelled vehicle, a prime mover, an electric generatordriven thereby, an electric motor for driving the vehicle supplied withcurrent from said generator, means underthe control of the operator forraising and lowering the speed of said prime mover above and below thecritical speed of said generator, and a spring for returningsaid meansto its lowest-speed position when released by the operator.

"7. In a self-propelled vehicle, a prime mover, an electric generatordriven thereby, means in another osition at starting against 10 anelectric motor for driving the vehicle supthe tension of sai spring.plied-with current from said generator, means In witness whereof I havehereunto set my the contfiol of tle (f perz(iltor for raising hand-this22d day of January, 1906. san' owerin t e-spee 0 sai rimemover t aboveand. elow the critical sgeed-of said v HERMANN generator, a sp forreturning said means Witnesses: to its-lo'west-spee position whenreleased by JOH A; MOMANUS, Jr. the operator, and a catch for holdingsaid HENRY O. WESTENDARP.

